/*
 * Copyright 2008-2010 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */
package com.sun.btrace.comm;

import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;

/**
 * A data command that hold data of type Map<String, Number>.
 * 
 * @author A. Sundararajan
 */
public class NumberMapDataCommand extends DataCommand {

	private Map<String, ? extends Number> data;

	public NumberMapDataCommand() {
		this(null, null);
	}

	public NumberMapDataCommand(String name, Map<String, ? extends Number> data) {
		super(NUMBER_MAP, name);
		this.data = (data != null) ? new HashMap<String, Number>(data) : null;
	}

	public Map<String, ? extends Number> getData() {
		return data;
	}

	public void print(PrintWriter out) {
		if (name != null && !name.equals("")) {
			out.println(name);
		}
		if (data != null) {
			for (Map.Entry<String, ? extends Number> e : data.entrySet()) {
				out.print(e.getKey());
				out.print(" = ");
				out.println(e.getValue());
			}
		}
	}

	protected void write(ObjectOutput out) throws IOException {
		out.writeUTF(name != null ? name : "");
		if (data != null) {
			out.writeInt(data.size());
			for (String key : data.keySet()) {
				out.writeUTF(key);
				out.writeObject(data.get(key));
			}
		} else {
			out.writeInt(0);
		}
	}

	protected void read(ObjectInput in) throws IOException,
			ClassNotFoundException {
		this.name = in.readUTF();
		Map<String, Number> map = new HashMap<String, Number>();
		int sz = in.readInt();
		for (int i = 0; i < sz; i++) {
			map.put(in.readUTF(), (Number) in.readObject());
		}
		this.data = map;
	}
}
